49ers defense

March 8, 2013

Tony Avelar/Associated Press

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Detroit Lions quarterback Matthew Stafford, right, is brought down by San Francisco 49ers outside linebacker Ahmad Brooks, left, during the fourth quarter of an NFL football game in San Francisco, Sunday, Sept. 16, 2012.

Tony Avelar/Associated Press

24of31

Detroit Lions quarterback Matthew Stafford, right, is brought down by San Francisco 49ers outside linebacker Ahmad Brooks, left, during the fourth quarter of an NFL football game in San Francisco, Sunday, Sept. 16, 2012.